I have a 22' cabin cruiser with a Chevy 305 in it that's having trouble continuously running. It keeps dying. We had it out on the water for the first time last night. I ran it on muffs in the driveway and didn't seem to have any problems with it. As soon as you apply any sort of throttle to it, it dies. I didn't seem to have this problem on the muffs. If you can get it started at like a 1/4 throttle, it'll let you rev it, but as soon as you go down and then back up it'll bog down and quit.
We ran it without the doghouse on it and if you were able to get it in gear, as soon as you applied more than idling throttle do it, you could hear it start "sucking" in air louder, but it would just bog down and quit. Could it be bad gas? I just don't understand how it could if it was running okay on muffs. I added about 12 gallons of premium to whatever was in there from last season. I would guess 5 or so gallons of premium.
I've never had really any problems with this boat, it's always been really reliable. I kind of forgot the feeling of being that guy who spends his whole trip out fixing the boat rather than enjoying the lake.
Any ideas on where to start?